Protesters clash with riot police during a demonstration outside the parliament building against planned government reforms in Athens, Greece, January 12. REUTERS/Alkis Konstantinidis

Detained Reuters journalist Kyaw Soe Oo and Wa Lone are escorted by police as they leave after a court hearing in Yangon, Myanmar, August 20. REUTERS/Ann Wang

A fisherman is seen on a bank of the Yenisei River at sunset near the Krasnoyarsk hydroelectric power station, with the air temperature at about minus 32 degrees Celsius (minus 25.6 degrees Fahrenheit), outside Krasnoyarsk, Russia, January 26. REUTERS/Ilya Naymushin

Harrison Massie, 22, poses for a photograph in the shower at his mother’s apartment in St. Louis, Missouri. Seven years ago, Harrison, now 29, started his journey transitioning from female to male. Sara Swaty, a young photographer and friend, set off to capture it, frame by frame, year after year. Photo taken March 2016. REUTERS/Sara Swaty

A child looks on, as volunteers of Venezuelan presidential candidate Javier Bertucci of the Esperanza por el Cambio party give food plates to women and children as part of a Mother’s Day celebration, during a campaign rally in Caracas, Venezuela, May 13. REUTERS/Carlos Jasso

Relatives of a Palestinian, who was killed at the Israel-Gaza border, react at a hospital in Gaza City, June 18. REUTERS/Mohammed Salem

U.S. President Donald Trump speaks at the International Association of Chiefs of Police Annual Convention in Orlando, Florida, October 8. REUTERS/Leah Millis

Britain’s Prime Minister Theresa May arrives for a family photo during the European Union leaders informal summit in Salzburg, Austria, September 20. REUTERS/Lisi Niesner

Former President Manuel Zelaya is helped by aides while being overcome by tear gas during a protest against the re-election of Honduras’ President Juan Orlando Hernandez in Tegucigalpa, Honduras January 12. REUTERS/Jorge Cabrera

Rohingya refugees crew a fishing boat in the Bay of Bengal near Cox’s Bazaar, Bangladesh, March 24. REUTERS/Clodagh Kilcoyne

Tsetse, 6-year-old daughter of Dukha herder Erdenebat Chuluu, sits among her family’s reindeer in a forest near the village of Tsagaannuur, Khovsgol aimag, Mongolia, April 21. The Dukha fear losing their identity in the face of a government conservation order banning unlicensed hunting on most of their traditional land. REUTERS/Thomas Peter

An electricity pole stands among burnt trees following a wildfire in Neos Voutzas, near Athens, Greece, July 25. REUTERS/Alkis Konstantinidis

A 2.4-kg chicken is pictured next to 14,600,000 bolivars, its price and the equivalent of $2.22 USD, at a mini-market in Caracas, Venezuela, August 16. It was the going price at an informal market in the low-income neighborhood of Catia. REUTERS/Carlos Garcia Rawlins

A migrant, part of a caravan traveling en route to the United States, stands next to police officers on the road from Arriaga to Tapanatepec, near Arriaga, Mexico, November 5. REUTERS/Carlos Garcia Rawlins

A woman holds a stuffed rabbit toy after it was found at her destroyed home where she said she had lost her three children, in Palu, Central Sulawesi, Indonesia, October 7. REUTERS/Jorge Silva

Migrants disembark from a dinghy at Del Canuelo beach after they crossed the Strait of Gibraltar from the coast of Morocco, in Tarifa, southern Spain, July 27. REUTERS/Jon Nazca

Cheerleaders from North Korea await the start of the opening ceremony of the Pyeongchang 2018 Winter Olympics. REUTERS/Jorge Silva

Mave Grace, 11, who had part of her arm chopped off by militiamen when they attacked the village of Tchee, stands with her sister Racahele-Ngabausi, aged two, in an Internally Displaced Camp in Bunia, Ituri province, eastern Democratic Republic of Congo, April 12. According to witnesses, militiamen killed her pregnant mother, her three brothers and injured her sister, Racahele-Ngabausi. REUTERS/Goran Tomasevic

A dog walks past trees covered with ash after the eruption of the Fuego volcano in San Miguel Los Lotes in Escuintla, Guatemala, June 8. REUTERS/Carlos Jasso

A White House staff member reaches for the microphone held by CNN’s Jim Acosta as he questions U.S. President Donald Trump during a news conference following the midterm elections at the White House, November 7. REUTERS/Jonathan Ernst

A migrant, part of a caravan of thousands from Central America trying to reach the United States, climbs the border fence between Mexico and the United States, in Tijuana, Mexico, November 18. REUTERS/Hannah McKay